20521878

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{263101}}^1$

素因数の和:263119

約数の個数: 16

約数和(自身を含む): 44201136

約数和(自身を除く): 23679258

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 263101, 526202, 789303, 1578606, 3420313, 6840626, 10260939, 20521878]

約数ペア:

[(1, 20521878), (2, 10260939), (3, 6840626), (6, 3420313), (13, 1578606), (26, 789303), (39, 526202), (78, 263101)]